Abstract

Davisson and Germer(1) have recently published their
very interesting results on reflection of electrons from a single crystal of
nickel. These results have been interpreted by analogy with the reflection
of X-rays from crystals. This analogy, however, is not complete. The
purpose of this short note is to point out the differences between the two
phenomena. For the mathematical treatment use is made of the recent
development of quantum mechanics (wave mechanics).